Asked by Devin
Write the system of equations as an augmented matrix. Then solve for x and y.
-3x-y=11
-9x-2y=34
Solution =
-3x-y=11
-9x-2y=34
Solution =
Answers
Answered by
Yesuf
-3x-y=11 *2 both sides
-9x-2y=34
--> -6x-2y=22
-9x-2y=34 subtract second equ from the first
--> 3x=-12
--> x=-4
Substitute -4 in the first equ
--> -6*-4-2y=22
--> 24-2y=22
--> -2y=22-24
--> y=-2/-2=1
-9x-2y=34
--> -6x-2y=22
-9x-2y=34 subtract second equ from the first
--> 3x=-12
--> x=-4
Substitute -4 in the first equ
--> -6*-4-2y=22
--> 24-2y=22
--> -2y=22-24
--> y=-2/-2=1
Answered by
Yesuf
Oh sorry something went wrong
Answered by
Yesuf
The answer is correct I was confused for a second
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